Water is flowing in a fire hose with a velocity of 1.0 m/s and a pressure of 200000 Pa. At the nozzle the pressure decreases to atmospheric pressure (101300 Pa), there is no change in height. Use the Bernoulli equation to calculate the velocity of the water exiting the nozzle. The velocity of the water exiting the nozzle ism/s. (Hint: The density of water is 1000 kg/m3).

The velocity is

Explanation:

From the question we are told that

    The velocity of the water in the pipe is  

     The pressure inside the pipe  is  

      The pressure at the nozzle is  

       The density of water is  

      For the height

where   is height of water in the pipe

  and   is height of water at the nozzle

Generally Bernoulli equation is represented as

=>  

Where is the velocity of the water at the nozzle

Now  making    the subject

substituting values

vapour or gas assuming atmospheriv pressure